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1883: Krakatau volcano in the Dutch East Indies roars to life with a volley of ever-increasing explosions. It will culminate the next morning with the loudest explosion in human history.

Krakatau (aka Krakatoa) had been rumbling and sending up puffs of ash since May 1883. The eruption turned deadly on the afternoon of Aug. 26, with the first explosion coming at 1 p.m. A column of black ash soon rose 17 miles into the sky above the Sunda Strait between Java and Sumatra. Earth around and under the volcano continued to move, sending a tsunami out around 5 p.m. Others would follow.

Explosions continued at night, and lightning jumped between the ash column and the island. St. Elmo's Fire played on a ship's yardarms and rigging 25 miles away, ash fell on its deck, and explosions deafened its crew.

Just after 10 a.m. on the morning of Aug. 27 came the final, cataclysmic explosion with 26 times the power of the biggest H-bomb test. As Krakatau's underground magma chamber emptied, the sea rushed in, at first sucking ships toward it in an inbound current. Then the 2,600-foot-high volcanic cone collapsed into the center, leaving little of the island above water and sending out a truly colossal tsunami.

Hundred-foot tidal waves (up to 130 feet in some places) scoured nearby coasts, obliterating hundreds of villages and taking more than 36,000 lives. Much reduced, the sea wave swept past the Cape of Good Hope into the Atlantic Ocean and even caused a measurable ripple in the English Channel.

The noise was heard at Alice Springs in the middle of Australia. Four hours after the massive explosion, 3,000 miles away on the island of Rodrigues in the western Indian Ocean, it was recorded as the "roar of heavy guns." The sound was audible over 1/13 the surface of the globe, according to the Guinness Book of World Records. The shock wave registered on a barometer in London.